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Lucas Flaquer
Looking for a jobFull Stack Engineer
Senior Full Stack Engineer at 99x building an AI-assisted print-ordering product, with a registration flow that increased companies by 30%.
BrazilFull Stack Engineer at 99x
Experience
Full Stack Engineer
Built the NestJS/PostgreSQL backend orchestrating three applications for an AI-assisted print ordering product, implemented multi-tenant authentication, real-time messaging with SSE, and a dynamic form generated by the RAG.
NestJSPostgreSQLBetterAuthSSENext.jsTailwindTanstack QueryBiomeTesting
Frontend Engineer
Refactored UI with composition pattern, owned an internal admin project end to end, led migration from ESLint to Biome, and coordinated releases with QA teams overseas.
ReactMaterial UIBiomeStorybookComposition PatternESLint
Full-Stack Developer
Contributed to a greenfield forestry funds platform from concept to MVP, built Next.js features and C#/.NET endpoints, integrated Pipefy via GraphQL and WebSockets, and raised test coverage to near 100%.
Next.jsC#.NETPythonGraphQLWebSocketsSonarQubeTestingCI CD
Full-Stack Developer
Rebuilt company registration flow and ran A/B test resulting in +30% registered companies, implemented SSR in Next.js, built Node.js Lambda functions, and cut frontend test suite time from 3 to 1.5 minutes.
Next.jsNodeJSLambdaRedisJestViteA B TestingCI CDDesign Systems
Frontend Developer
Ported Finclass and Stage platforms to Samsung and LG Smart TVs with React, Vue.js and TypeScript, and contributed to a knowledge-sharing guild.
ReactVue.JsTypeScriptSmart TVTizenWebOS
Frontend Developer
Worked on a fiscal management app, integrated a Ruby API with the frontend, delivered features, refactored legacy code, and contributed to testing.
RubyAPI IntegrationRefactoringTesting
Full-Stack Developer
Led development of institutional website and custom CMS built from scratch using React, Laravel, and TypeScript.
ReactLaravelTypeScriptCMS Development
Education
FACENS University Center
Bachelor's in Computer Engineering from FACENS University Center, completed in 2022.
Bachelor's in Computer Engineering from FACENS University Center, completed in 2022.
FATEC Sorocaba
Bachelor's in Systems Analysis and Development from FATEC Sorocaba, completed in 2017.
Bachelor's in Systems Analysis and Development from FATEC Sorocaba, completed in 2017.